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Ciliary muscle
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Ciliary muscleOne of the muscles that relax the zonules to enable the lens to change shape for focusing. The zonules are fibers that hold the lens suspended in position and enable it to change shape during accommodation.
RELATED TERMS--------------------------------------
Lens
The lens of the eye is like an adjustable lens of a camera and focuses light rays on to the retina for sharp images. A condition called presbyopia occurs when the lens is no longer able to adjust for objects at different distances.
Accommodation
In younger people, under age 40, the lens is adjusted by the ciliary muscles to focus clearly for near as well as far vision. With age the lens is less able to change, eventually requiring reading glasses or bifocals for close work.
SIMILAR TERMS--------------------------------------
Cilia
Short, hair-like structures extending from certain cells.
Ciliary body
Part of the eye, the ciliary body is a thin vascular (blood vessel-filled) middle layer of the eye that is situated between the sclera (the white of the eye) and the retina (the nerve layer that lines the back of the eye, senses light, and creates impulses that travel through the optic nerve to the brain).
Ciliary neuralgia
A distinctive syndrome of headaches, better known today as cluster headache.
Cilium
A fine hairlike projection from a cell such as those in the respiratory tract. Cilia can help to sweep away fluids and particles. Some single-celled organisms use the rhythmical motion of cilia for locomotion.
PREVIOUS AND NEXT TERMS--------------------------------------
Cidal
Suffix indicating killing, as in bacteriocidal (capable of killing bacteria) and in suicidal (the killing of oneself).
Cide
Suffix indicating killing or killer, as in bactericide (a solution capable of killing bacteria).
Ciguatera
Seafood poisoning due to ciguatoxin, a toxin acquired by eating fish that have consumed toxic single-celled marine organisms called dinoflagellates or fish that have consumed other fish that have become toxic. When someone eats these fish, they suffer seafood poisoning.
Ciguatoxin
A seafood toxin that is acquired by eating fish that have consumed toxic single-celled marine organisms called dinoflagellates or fish that have consumed other fish that have become toxic. When someone eats these fish, they suffer seafood poisoning. Food poisoning from ciguatoxin is called ciguatera.
Ciliary body
Part of the eye, the ciliary body is a thin vascular (blood vessel-filled) middle layer of the eye that is situated between the sclera (the white of the eye) and the retina (the nerve layer that lines the back of the eye, senses light, and creates impulses that travel through the optic nerve to the brain).
Ciliary muscle
Ciliary neuralgia
A distinctive syndrome of headaches, better known today as cluster headache.
Cilium
A fine hairlike projection from a cell such as those in the respiratory tract. Cilia can help to sweep away fluids and particles. Some single-celled organisms use the rhythmical motion of cilia for locomotion.
Cinacalcet
A drug that acts as a calcimimetic and that is marketed under the trade name Sensipar.
Circle of Willis
An arterial circle at the base of the brain that is of critical importance. The circle of Willis receives all the blood that is pumped up the two internal carotid arteries that come up the front of the neck and that is pumped from the basilar artery formed by the union of the two vertebral arteries that come up the back of the neck. All the principal arteries that supply cerebral hemispheres of the brain branch off from the circle of Willis.
Circular breathing
Inhaling through the nose and inflating the cheeks and neck with air at the same time.Some saxophone players do circular breathing; this may not be a safe practice since it may reduce blood flow to the brain.
RELATED TERMS--------------------------------------
Lens
The lens of the eye is like an adjustable lens of a camera and focuses light rays on to the retina for sharp images. A condition called presbyopia occurs when the lens is no longer able to adjust for objects at different distances.
Accommodation
In younger people, under age 40, the lens is adjusted by the ciliary muscles to focus clearly for near as well as far vision. With age the lens is less able to change, eventually requiring reading glasses or bifocals for close work.
SIMILAR TERMS--------------------------------------
Cilia
Short, hair-like structures extending from certain cells.
Ciliary body
Part of the eye, the ciliary body is a thin vascular (blood vessel-filled) middle layer of the eye that is situated between the sclera (the white of the eye) and the retina (the nerve layer that lines the back of the eye, senses light, and creates impulses that travel through the optic nerve to the brain).
Ciliary neuralgia
A distinctive syndrome of headaches, better known today as cluster headache.
Cilium
A fine hairlike projection from a cell such as those in the respiratory tract. Cilia can help to sweep away fluids and particles. Some single-celled organisms use the rhythmical motion of cilia for locomotion.
PREVIOUS AND NEXT TERMS--------------------------------------
Cidal
Suffix indicating killing, as in bacteriocidal (capable of killing bacteria) and in suicidal (the killing of oneself).
Cide
Suffix indicating killing or killer, as in bactericide (a solution capable of killing bacteria).
Ciguatera
Seafood poisoning due to ciguatoxin, a toxin acquired by eating fish that have consumed toxic single-celled marine organisms called dinoflagellates or fish that have consumed other fish that have become toxic. When someone eats these fish, they suffer seafood poisoning.
Ciguatoxin
A seafood toxin that is acquired by eating fish that have consumed toxic single-celled marine organisms called dinoflagellates or fish that have consumed other fish that have become toxic. When someone eats these fish, they suffer seafood poisoning. Food poisoning from ciguatoxin is called ciguatera.
Ciliary body
Part of the eye, the ciliary body is a thin vascular (blood vessel-filled) middle layer of the eye that is situated between the sclera (the white of the eye) and the retina (the nerve layer that lines the back of the eye, senses light, and creates impulses that travel through the optic nerve to the brain).
Ciliary muscle
Ciliary neuralgia
A distinctive syndrome of headaches, better known today as cluster headache.
Cilium
A fine hairlike projection from a cell such as those in the respiratory tract. Cilia can help to sweep away fluids and particles. Some single-celled organisms use the rhythmical motion of cilia for locomotion.
Cinacalcet
A drug that acts as a calcimimetic and that is marketed under the trade name Sensipar.
Circle of Willis
An arterial circle at the base of the brain that is of critical importance. The circle of Willis receives all the blood that is pumped up the two internal carotid arteries that come up the front of the neck and that is pumped from the basilar artery formed by the union of the two vertebral arteries that come up the back of the neck. All the principal arteries that supply cerebral hemispheres of the brain branch off from the circle of Willis.
Circular breathing
Inhaling through the nose and inflating the cheeks and neck with air at the same time.Some saxophone players do circular breathing; this may not be a safe practice since it may reduce blood flow to the brain.
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This dictionary contains 19186 terms.
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